System for loading motor vehicles into standard cargo-carrying enclosures

ABSTRACT

A method and apparatus are provided for loading motor vehicles into a standard cargo-carrying enclosure, such as a container or van, for transport therein. The vehicles are loaded onto a frame exterior of the enclosure so as to be supported thereby in multiple columns of vertically-spaced vehicles in end-to-end relation to one another. Thereafter the frame and vertically-spaced vehicles are inserted in unison matingly into the cargo-carrying enclosure for transport to a destination where the frame and vehicles are withdrawn from the enclosure for unloading purposes. Positioning of the vehicles on the frame prior to insertion into the container is accomplished by a powered gantry which successively detachably engages each of a plurality of different vehicle-support assemblies and lifts them and their associated vehicles separately relative to the frame into elevated positions where the support assemblies are retained against downward movement by locking to the frame. During insertion into the cargo-carrying enclosure, the frame is separated from the gantry.

BACKGROUND OF THE INVENTION

This invention relates to the loading of motor vehicles into standard cargo-carrying enclosures, such as containers or vans, for transport therein. More particularly, the invention relates to the loading of such motor vehicles into such enclosures in multiple columns of vertically-spaced vehicles arranged substantially end-to-end relative to one another.

It has been common to transport motor vehicles, such as passenger cars and small trucks, in vertically spaced groups or columns arranged substantially end-to-end. For example, conventional open highway trailers such as those shown in Baker U.S. Pat. No. 2,492,829 or British Pat. No. 1,006,496 have frames with vertically-adjustable vehicle support assemblies onto which the vehicles are driven and then raised to elevated positions by hydraulic jacks integrally mounted on the trailer frame. Alternatively, enclosures such as highway vans and rail cars have been equipped with integral vehicle-support assemblies within the enclosure for supporting vehicles in vertically-spaced groups such as shown, for example, in Hice U.S. Pat. No. 2,016,430, Linquist et al. U.S. Pat. No. 1,247,553, Gutridge U.S. Pat. No. 3,498,480, Canadian Pat. No. 961,699 and French Pat. No. 1,202,387.

The problems with all such structures are primarily twofold. First, vehicle-carrying structures having integral vehicle-support assemblies are not readily adaptable to transport goods other than vehicles and therefore cannot be efficiently utilized for the transport of other cargo on return trips after the delivery of the vehicles. Second, in enclosing structures having integral vehicle supports therein, it is most difficult to arrange the vehicles compactly within the enclosure because room is needed inside the enclosure for workmen to maneuver so as to properly secure the vehicles in vertically-spaced relationships. When this difficulty is avoided by dispensing with the enclosure, as in the conventional vehicle highway trailers, the lack of an enclosure exposes the vehicles to weather and road hazards and thus to damage.

Partly in answer to the foregoing problems, enclosed vehicle-transporting vans as shown in Smith U.S. Pat. Nos. 4,455,119 and 4,597,712, respectively, have been developed. However the continuing requirement structure makes each van inordinately expensive. Moreover the further continuing requirement, that the positioning of the vehicles in vertically-spaced relation to each other take place inside the van, perpetuates the difficulty of securing each vehicle within a relatively inaccesesible space.

What is needed, therefore, is an economical system for loading motor vehicles in vertically-spaced relation to each other within an enclosure for transport therein which does not require the enclosure to have any special integral vehicle-supporting structure, so that both its cost and its obstructions to the handling of other types of cargo are minimized, and which does not require any individual positioning or securing of the vehicles while in the enclosure.

SUMMARY OF THE INVENTION

The present invention overcomes the above-described deficiencies of the prior art by readily adapting standard cargo-carrying enclosures, such as containers and highway vans, to transport motor vehicles in columns of vertically-spaced vehicles arranged generally end-to-end. The invention accomplishes this by providing a frame insertable into the cargo-carrying enclosure having a vehicle-supporting structure upon which vehicles can be positioned and secured in vertically-spaced relation to one another while exterior of the enclosure. Thereafter, the entire frame with its vehicles already supported and secured thereon can be inserted as a unit into the enclosure for transport therein. This system permits the vehicles to be arranged in a compact configuration while maintaining easy access for positioning and securing of the vehicles.

At the vehicles' destination, unloading of the enclosure is equally facilitated by the ability of the entire frame simply to be withdrawn from the enclosure in unison with the vehicles mounted thereon. Once exterior of the enclosure, the vehicles are all easily accessible for demounting and removal from the frame. The empty frame may then be reinserted into the enclosure and, because it is a type of frame requiring no interior structure when empty, its open interior space may be loaded with other types of cargo for the return trip. Such interior space is very nearly as large as the interior space of the cargo-carrying enclosure itself because of the mating insertable fit of the sides of the frame within the enclosure.

Even though the frame has multiple vehicle-support assemblies for elevating the vehicles, economy of the frame is enhanced by making it unnecessary for each vehicle-support assembly to have an integral powered lifting mechanism. Instead, powered lifting apparatus is provided which detachably engages each vehicle-support assembly separately to raise it, and its associated vehicle, into an elevated position. Thereafter, the support assembly is restrained against downward movement, after disengagement of the lifting apparatus, by locking to the frame. The lifting apparatus is movable with respect to the frame horizontally from support assembly to support assembly so as to be able to engage each individually. Preferably the lifting apparatus is separable from the frame, upon insertion of the frame into the cargo-carrying enclosure, so that the lifting apparatus can be used for elevating vehicles on subsequent frames.

In order to maximize the versatility of the frame for compact carrying of vehicles of different sizes, each vehicle support assembly is not only liftable to a height independent of any other support assembly, but is free of any structure extending between its front wheel-engaging surfaces and its rear wheel-engaging surfaces so that the top of an underlying vehicle may encroach upon the longitudinal space between the front and rear wheels of an upper vehicle. The vehicle-support assemblies are also able to tilt the vehicles at any angle by virtue of the ability of the lifting apparatus to raise the forward and rear extremities of each vehicle-support assembly by respective distances independent of each other.

The foregoing and other objectives, features, and advantages of the invention will be more readily understood upon consideration of the following detailed description of the invention, taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of an exemplary embodiment of an insertable, vehicle-carrying frame constructed in accordance with the present invention, shown supported on a modified flatbed trailer having a gantry assembly for loading of the vehicles onto the frame.

FIG. 2 is a top view of the frame, trailer and gantry assembly of FIG. 1 with the vehicles removed to show the frame structure.

FIG. 3 is a partially sectional side view showing the trailer and gantry assembly of FIG. 1 in relation to a standard, cargo-carrying container into which the frame and its supported vehicles have been inserted.

FIG. 4 is an enlarged, perspective exterior view of a portion of the end of the trailer and frame positioned closest to the cargo-carrying container.

FlG. 5 is an enlarged, perspective, interior view of a portion of the side and end of the frame opposite to the end shown in FIG. 4.

FIG. 6 is an enlarged, extended perspective view of a portion of the top rail of the frame shown in association with a gantry mast and a pair of depending, vehicle-supporting tension members.

FIG. 7 is an enlarged, exploded perspective view of a lower vehicle wheel support.

FIG. 8 is an enlarged, partially sectional end view of a portion of an upper vehicle wheel support shown in association with a gantry mast.

FIG. 9 is an extended side view of the powered carrier assembly on the trailer which selectively inserts or withdraws the frame with respect to the cargo-carrying enclosure.

FIG. 10 is an enlarged perspective view of the carrier of FIG. 9 and the tongue by which the carrier attaches to the frame.

FIG. 11 is an enlarged sectional view taken along lines 11--11 of FIG. 9.

DESCRIPTION OF THE PREFERRED EMBODIMENT General Description

With reference to FIGS. 1-3, a vehicle-supporting frame 10 is supported by rollers 12a, 12b, 12c atop a suitable frame-supporting structure, such as a modified flatbed trailer 14. The open end of an empty cargo-carrying enclosure, such as a container 16 (FIG. 3), is aligned with the end 14a of the trailer 14 at the same level as the bed of the trailer so that the frame 10 can be rolled longitudinally from the trailer into the container. In order to ship motor vehicles such as 18 in the container, they are first loaded onto the frame 10 by driving them up a ramp 11 into the frame while it is exterior of the container, some of the vehicles being elevated into vertically-spaced relation above other vehicles so as to be supported on the frame 10 roughly in columns of two or more arranged end-to-end. Elevating of the motor vehicles on the frame 10 is accomplished by a powered lifting apparatus or gantry 20 movably mounted on the trailer 14 and separable from the frame 10 when the frame is ultimately inserted into the container 16.

The Insertable Frame

The frame 10 is an elongate, rectilinear structure composed of a pair of transversely-spaced, upright sides 10a and 10b joined together at their ends by respective upper cross members 10c, 10c' and lower cross members 10d, 10d' (FIGS. 4 and 5). The end of the frame to be inserted first into the container, i.e. the end adjacent the end 14a of the trailer, has diagonal cross-bracing 10e for rigidity, while the opposite end of the frame is unobstructed to permit the entry of vehicles. Each side 10a and 10b, respectively, has a top rail 24 and a bottom rail 26 with spaced columns 28 supporting the top rail vertically. Pivotally suspended from each top rail 24 by pins 29 (FIG. 6) mounted on bases 29a slidable within a channel 24a are three pairs of tension members 30a, 30a'; 30b, 30b'; and 30c, 30c'. A greater or lesser number of the tension members could alternatively be provided. One of each pair of tension members, such as member 30c shown in FIG. 7, is pinned at its bottom by pins 32 to apertures 33 in the bottom rail 26 so as to be restrained against movement longitudinally and transversely of the frame. The other tension member of the pair, such as 30c' as shown in FIG. 8, engages the bottom rail 26 by means of a slidable yoke 34 for preventing only transverse movement unless an optional pin such as 35 is inserted. Longitudinal spacing between the tension members of any pair can be adjusted coarsely by the selection of different apertures 36 and 33 in the top and bottom rails, respectively, pins 38 (FIG. 6) being provided for insertion into apertures 36. Fine variation in the spacing is obtainable by virtue of the pivoting pendulum motion of the tension member such as 30c' having the yoke 34 at its bottom.

Vehicle-supporting assemblies are slidably attached to the tension members so as to be vertically movable with respect thereto, each vehicle-supporting assembly comprising either a pair of upper wheel supports such as 42a or a pair of lower wheel supports such as 42b extending transversely between corresponding tension members on each side of the frame. The wheel supports 42a and 42b include elongate, transverse, tubular frames 43 attached by cradle members 44 to vertically-slidable members 46a (for upper wheel supports 42a shown in FIGS. 5 and 8) or 46b (for lower wheel supports 42b shown in FIG. 7). The vertically-slidable members 46a are slidably attached to the tension members by enclosing sleeves 41a, while the members 46b are slidably attached by split-sleeves such as 41b for reasons to be explained hereafter. The sleeves can be locked to the tension members at different elevations by pins such as 39 (FIG. 7) inserted through apertures 40 below the sleeves to prevent downward movement of the wheel supports.

The cradle members 44, due to their pivotal connections 44a, 44b, 44c and 44d, are swingable relative to the members 46a, 46b and thus provide a further degree of fine adjustability of the distance between each pair of wheel supports. Once the vehicle has been raised into its final elevated position, stabilizing blocks 45 (FIG. 5) can be inserted into appropriate apertures 47 in the vertically slidable members of the wheel supports to lock the cradle members 44 against pivoting during transport of the vehicles.

The tubular frames 43 are detachably connected at each end to the cradle members 44 by pins 48 extending through end tubular members of the frames, enabling them to be easily removed when no vehicles are supported by the frame 10 so as to clear the spac between the sides 10a, 10b of all obstacles and maximize the space available for other types of cargo.

It can be seen that no structure extends between the wheel-supporting surfaces of an elevated pair of wheel supports, thereby providing free space between the front and rear wheels of the vehicle supported thereon which can be occupied by the upper extremity of the next lower vehicle if necessary. The value of this feature in permitting vehicles to be supported in close vertical proximity to each other is exemplified by the close vertical proximity of vehicles 18a and 18b in FIG. 1.

The Frame-Supporting Assembly

The frame 10 is movably supported atop the frame-supporting trailer 14 by three rollers 12a, 12b and 12c on each bottom rail 26 of the frame 10. During loading of the frame 10 with vehicles, the frame is detachably secured against movement with respect to the trailer 14 by means of a detachable connection between the trailer and an ear 56 (FIG. 10) protruding from the lower frame cross member 10d' in a manner to be described hereafter in detail.

Along the outside longitudinal edges of the trailer 14, exterior of the sides 10a and 10b of the frame, is a gantry assembly 20 mounted for horizontal movement relative to the trailer and frame by means of rollers 60 riding on rails 61 supported by the trailer. Stops 62a and 62b at each end of the rails 61 limit the horizontal travel of the gantry rollers 60. The gantry 20 is composed of two pairs of transversely-spaced masts 64a and 64b, each pair being joined together at their tops by a respective transverse cross member 65 and each pair having separate bases 67 each of which mounts a pair of the rollers 60. The two pairs of masts are longitudinally spaced with respect to each other by a distance which is adjustable by selective actuation of a pair of double-acting hydraulic cylinders 66 extending between the bases 67 of the two pairs of masts. Each mast is preferably of two-stage construction having a lower portion 69 secured to the base 67 and an upper portion 71 vertically slidable relative to the lower portion 69 under the control of a double-acting hydraulic cylinder 68. A further double-acting hydraulic cylinder 70 depends from the upper portion 71 of each mast and has a cylinder rod 70a to the end of which is fastened a frame 72 having a hook 74 pivotally attached thereto for selectively engaging and disengaging any one of the vertically-slidable members 46a or 46b of the vehicle wheel supports 42a or 42b. The sleeve 41a or 41b of each vertically-slidable member of the wheel supports has an outwardly-protruding eye 75 at the top thereof engageable by a respective hook 74 when the hook is pivoted forwardly by the extension of a spring-retracted pneumatic cylinder 76 (FIG. 8) mounted on the frame 72, and disengageable from the hook by retraction of the cylinder 76.

When the eyes 75 of the vertically-slidable members 46a on each end of a particular upper wheel support 42a have been engaged by the hooks 74 of a pair of masts 64a or 64b, the members 46a may be raised upwardly by extension of cylinder 68 and/or retraction of cylinder 70 of each mast to raise the respective wheel support 42a to an elevated position. This raises the front or rear wheels of a motor vehicle supported thereby while the other pair of masts of the gantry 20 likewise raises the wheel support 42a upon which the other wheels of the same vehicle are supported. Each wheel support can be raised by a distance independent of the other wheel support due to the separate controllability of the respective hydraulic cylinders of the two pairs of masts of the gantry, enabling the vehicle to be tilted to any desired attitude to maximize the number of vehicles which can be supported by the frame 10. When the desired elevated positions of the wheel supports are obtained, the aforementioned pins such as 39 (FIG. 7) are inserted through the apertures 40 in the respective tension members immediately below the sleeves 41a by which the members 46a slide vertically on the tension members. Thereafter the hooks 74 can be pivoted rearwardly by retraction of the respective pneumatic cylinders 76 and the masts lowered to disengage the hooks from the eyes 75.

A further vehicle may be supported by the frame 10, immediately below the vehicle which has been elevated as described in the previous paragraph, to form a column of vehicles by slidably attaching a pair of lower wheel supports 42b to the bottoms of the same tension members which support the elevated vehicle, and using the gantry 20 to lift the wheels of the further vehicle clear of the bed of the trailer 14. The only difference between the lower wheel supports 42b and the upper wheel supports 42a is the aforementioned split-sleeve 41b (FlG. 7) which enables the vertically-slidable members 46b to be attached to the tension members laterally from inside the frame 10. The outer portion of each split sleeve carries the hook-engaging eye 75 and lifts the inner portion of the sleeve through lugs 41c when engaged by a respective hook 74.

For positioning a second column of vertically-spaced vehicles in end-to-end relation to a first column, the entire gantry 20 is moved horizontally on the rollers 60 into alignment with a pair of wheel supports 42a on the next pair of tension members, and the foregoing operation is repeated. Horizontal movement of the gantry 20 is accomplished by means of respective cables 80 which extend along each side of the trailer 14 over end idler pulleys 82 and 83 and attach to the respective bases 67 of the pair of masts 64a of the gantry by any suitable fastener such as 81. The cables bypass the bases 67 of the other pair of masts 64b so as to permit spacing adjustment by hydraulic cylinder 66. The cables 80 are wrapped around a pair of sheaves 79 driven in unison by a selectively controllable, reversible hydraulic motor 79a which moves the gantry 20 reversibly in either horizontal direction along the trailer 14.

The position of the frame 10 on the trailer 14 is determined by control of a powered carrier 85 (FIGS. 9, 10, 11). The carrier 85 is slidably mounted on a track 84 extending longitudinally along the center of the trailer 14 exposed to the surface of the trailer bed, and is movably secured to the track 84 by roller bearings 86. A tongue 87 detachably engages both the ear 56 of the frame, through a pin 87a, and a pair of lugs 85a on the carrier, and can be positioned reversibly as shown in phantom if needed. A chain 88 is attached to each end of the carrier 85 through respective idler pulleys 90 and 92 at each end of the trailer, and through an intermediate length of cable 89. The chain 88 engages a driving chain pulley 96 driven by another reversible hydraulic motor (not shown) which, when not activated, holds the carrier 85 and thus the frame 10 against movement relative to the trailer 14 during loading of vehicles onto the frame 10. Thereafter, to insert the frame into the container, the hydraulic motor selectively drives the pulley 96 in a clockwise direction as seen in FIG. 9. Alternatively, to withdraw the frame from the container, the pulley 96 is driven in the opposite direction.

All hydraulic and pneumatic cylinders and motors on the trailer 14 are controlled by separate conventional manual control valves (not shown) supplied by fluid or air from any convenient source, such as from a truck tractor through quick-disconnect hose attachments.

OPERATION

In operation, an empty frame 10 is positioned on the trailer 14 as shown in FIG. 1 by any convenient means. Normally, this would be accomplished by aligning a container 16 with the end 14a of the trailer, the container already having the frame 10 positioned therein from a previous trip, and withdrawing the frame from the container onto the trailer 14. To do so, the carrier 85 is moved by activation of the chain pulley 96 adjacent to the container, and the tongue 87 is attached to the ear 56 of the frame and to the carrier 85 as shown in FIG. 10. The carrier 85, acting through the tongue 87, then pulls the frame from the container to the bed of the trailer by driving of the chain pulley 96 so as to move the carrier 85 away from the container. The frame is loaded with vehicles by driving them, one at a time, up the ramp 11 onto the bed of the trailer between the sides of the frame 10. The first vehicle is driven onto a fully-lowered pair of wheel supports 42a at the end of the frame adjacent to the container, i.e. the supports 42a attached to tension members 30a and 30a' lowered into engagement with the trailer bed, after which the vehicle is raised by the gantry 20 to the desired elevated position where the wheel supports are restrained against downward movement by the insertion of pins 39 through the apertures 40 in the tension members.

Thereafter a lower pair of wheel supports 42b are attached to the same tension members 30a and 30a' in fully lowered positions, and a second vehicle is driven up the ramp 11 and onto the lower wheel supports. The gantry hooks 74 are detached from the upper wheel supports 42a and lowered into engagement with the lower wheel supports 42b to raise the wheels of the lower vehicle above the trailer bed so that the vehicle wheels will not impede the eventual insertion of the frame into the container by contact with the trailer bed. The lower wheel supports are then pinned by further pins 39 to prevent their downward movement.

The next two columns of vertically-spaced vehicles are loaded onto the frame in the same manner, the gantry being moved horizontally into alignment with the next pairs of tension members 30b, b' and 30c, c' in succession to detachably engage, raise and disengage the respective wheel supports. Prior to insertion of the frame into the container, the vehicles are preferably all secured to the wheel supports by conventional tie-down chains (not shown).

With the frame 10 fully loaded with vehicles, and with the gantry 20 fully disengaged from all wheel supports, the carrier 85 is actuated by driving the chain pulley 96 to push the frame 10 into the container 16, transmitting the pushing force through the tongue 87. With the frame fully inserted in the container, the tongue 87 is detached from the frame and from the carrier, and blocking members (not shown) are placed at the bottom of the container at each end of the frame 10 to restrain the lower rails of the frame against longitudinal movement within the container. The container is then closed and taken away for transport.

At the container's destination, a similar trailer 14 with gantry 20 is provided for unloading purposes. Accordingly, the frame with its vehicles is withdrawn from the container by attachment of the tongue 87 to the frame 10 and carrier 85 in the manner previously described, followed by withdrawal of the frame from the container. To unload the vehicles, the gantry operates on each vehicle in the reverse of the order in which it was loaded, raising the respective wheel supports momentarily to withdraw the pins 39 and then lowering them completely so that the vehicle can be driven off the trailer bed.

After unloading is completed, the remaining wheel supports still attached to the tension members of the frame may have their transverse tubular frames 43 detached by removal of pins 48, after which the empty frame 10 may be reinserted into the container. The interior of the container is then virtually empty except for the surrounding shell of the frame, and may be loaded conventionally with other cargo for the return trip. The fact that the sides 10a, 10b of the frame 10 mate in close proximity to the sides of the container maximizes the capacity of the container for the other cargo.

The terms and expressions which have been employed in the foregoing specification are used therein as terms of description and not of limitation, and there is no intention, in the use of such terms and expressions, of excluding equivalents of the features shown and described or portions thereof, it being recognized that the scope of the invention is defined and limited only by the claims which follow. 

What is claimed is:
 1. A method of loading wheeled vehicles into an elongate three-dimensional closed-sided general-purpose cargo-carrying container for transporting multiple types of cargo, said method comprising:(a) providing an elongate three-dimensional vehicle-supporting frame matingly insertable into said container, said frame having transversely-spaced, elongate upright sides and an interior space between said sides capable of enclosing a plurality of wheeled vehicles in respective upper and lower positions vertically spaced one above the other; (b) positioning at least a portion of said frame exterior of said container; (c) while said portion of said frame is exterior of said container, positioning and supporting said wheeled vehicles upon said frame in said respective upper and lower positions in a condition physically isolated from one another by detachably interconnecting a powered lifting apparatus supportively with at least one of said vehicles within said interior space, moving said one of said vehicles while within said interior space vertically between said upper and lower positions while supporting said powered lifting apparatus independently of said frame and exterior of said space, and thereafter detaching said lifting apparatus from said one of said vehicles; (d) thereafter matingly inserting said portion of said frame, with said vehicles supported in said upper and lower positions, longitudinally into said container such that said upright sides of said frame are in close transverse proximity to the interior of said container; and (e) maintaining said lifting apparatus exterior of said container after step (d).
 2. A method of loading wheeled vehicles into an elongate three-dimensional closed-sided general-purpose cargo-carrying container for transporting multiple types of cargo, said method comprising:(a) providing an elongate three-dimensional vehicle-supporting frame insertable into said container, said frame having an interior space capable of enclosing a plurality of wheeled vehicles in respective upper and lower positions vertically spaced one above the other, and having respective upper and lower vehicle support assemblies mounted on said frame for supporting said vehicles in said upper and lower positions, respectively, in a condition physically isolated from one another; (b) positioning a vehicle on said frame in said lower position by moving said lower vehicle support assembly vertically relative to said frame while said vehicle is supported on said lower vehicle support assembly; and (c) inserting said frame, with said vehicles supported thereon in said upper and lower positions, longitudinally into said container.
 3. The method of claim 2 wherein step (b) comprises detachably interconnecting a powered lifting apparatus supportively with said lower vehicle support assembly and moving said lower vehicle support assembly vertically relative to said frame with said vehicle thereon while supporting said powered lifting apparatus independently of said frame.
 4. The method of claim 2 wherein step (b) comprises positioning said vehicles on said frame in both said upper and lower positions by raising both said upper and lower vehicle support assemblies vertically relative to said frame while said vehicles are supported on said assemblies, said raising being performed sequentially by first raising said upper vehicle support assembly and thereafter raising said lower vehicle support assembly.
 5. A system for containing wheeled vehicles for transport, said system comprising:(a) an elongate three-dimensional frame; (b) means for supporting a plurality of wheeled vehicles within said frame in a condition physically isolated from one another at multiple levels whereby certain vehicles are supported in an elevated condition and other vehicles are supported at levels below said certain vehicles; (c) an elongate three-dimensional closed-sided general-purpose cargo-carrying container separate and apart from said frame for transporting multiple types of cargo, said container having an open end adapted to matingly receive said frame through said end; (d) means for positioning wheeled vehicles at multiple levels within said frame, while the frame is separate and apart from said container, said means for positioning functioning to position said certain vehicles in said elevated condition; and (e) power operated means for moving said frame, while loaded with vehicles, through said open end and into matingly received condition within said container.
 6. A system according to claim 5 wherein said means for supporting said vehicles comprises wheel supporting carriages on said frame, at least certain carriages being elevatable relative to the frame to lift said certain vehicles while within said frame to said elevated condition, and wherein said system further comprises means for securing said certain carriages in elevated positions on said frame.
 7. A system according to claim 6 wherein said means for positioning comprises a powered lifting apparatus separate and apart from said frame, said apparatus being adapted to simultaneously lift the carriages supporting the forward and rearward wheels of one of said certain vehicles.
 8. A system according to claim 7 wherein said means for positioning is adapted to impart different degrees of elevation to the forward and rearward wheels of a vehicle being lifted thereby.
 9. A system for containing wheeled vehicles for transport, said system comprising:(a) an elongate three-dimensional frame of a predetermined height having an open top; (b) means for supporting a plurality of wheeled vehicles within said frame in a condition physically isolated from one another at multiple levels whereby certain vehicles are supported in an elevated condition extending at least in part through and above said open top of said frame, and other vehicles are supported at levels below said certain vehicles; (c) an elongate three-dimensional closed-sided general-purpose cargo-carrying container separate and apart from said frame for transporting multiple types of cargo, said container being adapted to matingly receive said frame and being of a predetermined height greater than that of said frame to provide a space within which said certain vehicles may extend when said frame is received within said container; (d) means for positioning wheeled vehicles at multiple levels within said frame, while said frame is separate and apart from said container, said means for positioning functioning to position said certain vehicles in said elevated condition; and (e) power operated means for moving said frame, while loaded with vehicles, into matingly received condition within said container.
 10. A system according to claim 9 wherein said means for supporting said vehicles comprises wheel supporting carriages on said frame, at least certain carriages being elevatable relative to the frame to lift said certain vehicles while within said frame to said elevated condition, and wherein said system further comprises means for securing said certain carriages in elevated positions on said frame.
 11. A system according to claim 10 wherein said means for positioning comprises a powered lifting apparatus separate and apart from said frame, said apparatus being adapted to simultaneously lift the carriages supporting the forward and rearward wheels of one of said certain vehicles.
 12. A system according to claim 11 wherein said means for positioning is adapted to impart different degrees of elevation to the forward and rearward wheels of a vehicle being lifted thereby.
 13. A system for containing wheeled vehicles for transport, said system comprising:(a) an elongate three-dimensional frame; (b) means for supporting a plurality of wheeled vehicles within said frame in a condition physically isolated from one another at multiple levels whereby certain vehicles are supported in an elevated condition and other vehicles are supported at levels below said certain vehicles; (c) an elongate three-dimensional closed-sided general-purpose cargo-carrying container separate and apart from said frame for transporting multiple types of cargo, said container being adapted to matingly receive said frame; (d) means for positioning wheeled vehicles at multiple levels within said frame while said frame is separate and apart from said container; (e) wheel supporting carriages for supporting vehicles received within said frame, at least certain carriages being elevatable relative to said frame to lift vehicles supported thereon within said frame to said elevated condition relative to said frame while said frame is separate and apart from said container; and (f) power operated means for moving said frame, while loaded with vehicles, into matingly received condition within said container.
 14. A system according to claim 13, further comprising means for securing said certain carriages relative to said frame.
 15. A system according to claim 14 wherein said means for positioning comprises a powered lifting apparatus separate and apart from said frame, said apparatus being adapted to simultaneously lift the carriages supporting the forward and rearward wheels of one of said certain vehicles.
 16. A system according to claim 15 wherein said means for positioning is adapted to impart different degrees of elevation to the forward and rearward wheels of a vehicle being lifted thereby. 